Yusak O. Susilo

Yusak O. Susilo
University of Natural Resources and Life Sciences Vienna | boku · Institute of Transport Studies

ST., MT., D.Eng., PGCert. TLHE, Docent

About

167
Publications
69,976
Reads
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4,918
Citations
Citations since 2017
77 Research Items
4081 Citations
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Introduction
Yusak O. Susilo is a Chair and BMK Endowed Professor in Digitalisation and Automation in Transport and Mobility System at the University of Natural Resources and Life Sciences, Vienna, Austria.
Additional affiliations
October 2019 - present
University of Natural Resources and Life Sciences Vienna
Position
  • Chair and BMK Endowed Professor (Full)
August 2011 - September 2019
KTH Royal Institute of Technology
Position
  • Professor (Full)
August 2007 - August 2011
University of the West of England, Bristol
Position
  • Senior Lecturer

Publications

Publications (167)
Poster
Since information and communication technology (ICT) has become integral to our daily activities, the daily observations that capture virtual and physical activities have become pivotal to shaping travel behaviour research. This paper describes an implementation of a cross-dimensional one-week virtual and physical activities diary survey, including...
Article
Full-text available
Bike-sharing systems (BSS) are gaining popularity in cities worldwide, as a part of a generalized strategy to mitigate the problems derived from motorized transportation (congestion, pollution, noise, etc.). These systems have proved to have positive effects on cities, moreover, many of them have reached a performance peak and require improvements...
Article
Automation technology has received great attention recently and been expected to play an important role in future transport systems. Understanding determinants of travellers' intention to use the bus and recommend the service to others is critical to promote such new travel modes. Although previous studies have focused on plausible scenarios based...
Article
Full-text available
When activity locations were shut down in the first lockdown to prevent the spread of COVID-19 in Austria, people reduced their trips accordingly. Based on a dataset obtained through a weeklong mobility and activity survey we analyse mobility and time use changes, as well as changes in activity locations and secondary activities. Regression analysi...
Article
Willingness-to-pay (WTP) is an institutionally accepted approach for deriving the monetary values of transport policy measures in many countries. Public transport (PT) service providers around the world are implementing integrated ticketing schemes to improve synergy and to remove or reduce the barriers to travelling across operators that are creat...
Article
Ticket payment and inspection are the two main dimensions of public transport (PT) ticketing for users. Both research and technological advances have focused mainly on improving the former. In contrast, this study explored users' preferences for ticket inspection options and identified some factors that influenced their likelihood of accepting “sea...
Article
Responses to COVID-19 altered environmental exposures and health behaviours associated with non-communicable diseases. We aimed to (1) quantify changes in nitrogen dioxide (NO 2), noise, physical activity, and greenspace visits associated with COVID-19 policies in the spring of 2020 in Barcelona (Spain), Vienna (Austria), and Stockholm (Sweden), an...
Article
Full-text available
Responses to COVID-19 altered environmental exposures and health behaviours associated with non-communicable diseases. We aimed to (1) quantify changes in nitrogen dioxide (NO2), noise, physical activity, and greenspace visits associated with COVID-19 policies in the spring of 2020 in Barcelona (Spain), Vienna (Austria), and Stockholm (Sweden), and...
Article
Full-text available
Increasing sustainable travel patterns necessitates a considerable amount of research aimed at the detail measurement and understanding of travel mode choice. Most Public transport (PT) service quality improvements are expected to have positive effects on a shift from car to PT. The effects of improvements such as integrated ticketing is often over...
Article
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To better understand the interactions between physical built environment conditions and one’s well-being, we created a passive data collector for travellers and made the first step towards an explanatory model based on psychophysiological relations. By measuring biometric information from select trial participants we showed how different controlled...
Article
Integrating automated buses (ABs) into the public transport system may have potentials of providing more environment-friendly and cost-efficient mobility solutions by improving travel safety, reducing cost and decreasing congestion. However, the realization of the potentials depends not only on innovative technologies but also on users’ acceptance...
Article
Full-text available
Introduction The first wave of COVID-19 pandemic period has drastically changed people’s lives all over the world. To cope with the disruption, digital solutions have become more popular. However, the ability to adopt digitalised alternatives is different across socio-economic and socio-demographic groups. Objective This study investigates how ind...
Article
Full-text available
There has been a substantial amount of research on travel-based multitasking and its effect on travel and life satisfaction. Previous studies, however, have not considered the effect of built environment, health, and daily activity duration on such analyses. There is also a lack of knowledge about the effect of such multitasking on individuals’ dai...
Article
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Travel surveys can uncover information regarding travel behaviour, needs, and more. Collected information is utilised to make choices when reorganising or planning built environments. Over the years, methods for conducting travel surveys have changed from interviews and forms to automated travel diaries in order to monitor trips made by travellers....
Article
Studies emerging from both Global North and Global South have conclusively established that women's usage and preference for transport modes differs from men. This discussion has typically been restricted to private car versus public transport (PT) debate. However, the infiltration of new modes of transport adds an additional layer to the discussio...
Article
A trip chain refers to a series of interdependent trips chained together, starting from an origin, going through one or more stops, and finally ending at a destination. Common origins, destinations and stops include home, work, and other places where people conduct activities (e.g., shopping, transfer from one to another means of travel). Trip chai...
Preprint
Full-text available
By using 530 responses from an online questionnaire, this study aims to investigate the transition from physical to online shopping alternatives during the first wave of the COVID-19 pandemic period at the individual level. The focus areas of the study are Sweden and Italy, two European countries that implemented contrasting prevention measures. Th...
Article
The sustainable and continuous development of public transport systems is crucial to ensuring robust and resilient transport and economic activity whilst improving the urban environment. Through technological improvement, cities can increase the competitiveness of public transport, promote equality and pursue a multi-modal shift to greener solution...
Article
Successful implementation of a first-/last-mile automated bus (AB) service depends on consumers’ actual adoption of the service. Consumers, when decided to take an AB ride for the first time, shall rely on their expectation of the service and capabilities of the technology. After the first ride of the vehicle, their value assessments of the service...
Article
Full-text available
A fair distribution of public transport benefits is a commonly stated goal of agencies and operators of public transport. However, it is less complicated and costly to provide accessibility in some parts of cities and their surroundings than in other parts. Densely populated areas, and areas situated closer to the city center therefore often have h...
Article
Using a modified three-level modelling method and a multidimensional three-week household time-use and activity diary, this study investigates the interaction of the time duration of individuals’ activities, travel parameters, the built environment and socio-demographics on people’s transport-related social inclusion. Such interactions are assumed...
Article
The successful adoption of a product or service by its target market or users relies on delivering a product or service in line with their needs and expectations. Failure to do so will likely result in a low rate of uptake or use of the product or service. This study sought to identify the criteria by which potential users of a first-/last-mile aut...
Article
Full-text available
Corporate Mobility as a Service (CMaaS) is a type of MaaS that enables mobility within as well as to and from a worksite for employees. The expected benefits of CMaaS are to support a shift towards more sustainable and more effective work-related transport activities. There is a lack of knowledge regarding the impacts of CMaaS and how its performan...
Article
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The rapid development of automated buses holds great potential for the development of transportation systems. As research into innovative forms of automated transportation systems gains momentum, it is important to understand the public’s perceptions of such public transport systems. Previous studies have contributed based on hypothetical scenarios...
Article
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Introduction Travel demand and travel satisfaction of a transport service are affected by user perceptions of the service quality attributes, and such perceptions should be included in studying user willingness-to-pay (WTP) for automated vehicle (AV) services. This study applied structural equation modelling with service quality attribute perceptio...
Article
The need for improved public transport (PT) ticketing in ever-growing deregulated PT markets has made well-designed integrated ticketing systems a priority area of intervention for PT service providers around the world. Yet, very little practical evidence of its impacts are reported in Sweden and in the world at large. The focus of this study was t...
Article
Full-text available
When Public Transport Administrations propose changes in fare schemes or increased fares, they are often met with concerns regarding the proposed fare schemes fairness. Implicit in these concerns is an understanding of relations governing land use and public transport, impacting equity. In this paper, we use socio-economic statistics of census area...
Article
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Weather is fundamentally a perception rather than an objective measure. This study uses data from a four-wave travel diary survey and aims to answer two research questions, i.e. 1. How individuals from different socio-demographic groups perceive weather. 2. How an individual’s weather perception affects his/her leisure activity participation decisi...
Chapter
In the last decades, the Global South has seen the inclusion of women in the job market and a continuous growth of urban areas which contributes to overcrowding in public transport (PT). At the same time the higher dependence of women on PT, the presence of latent societal gender inequality issues, an increasing awareness of gender-based violence a...
Article
Making Public Transport services more attractive and effective requires attractive and effective ticketing. This requires a clear understanding of user attitudes, needs and expectations. This study explored commuters’ attitudes to fare collection and verification and the underlying factors, their acceptance of the policy of “No-ticket-purchase on-b...
Article
Full-text available
Understanding how satisfaction with individual trip legs aggregates to the overall travel experience for different types of trips will enable the identification of the trip legs that are most impactful. For this purpose we analyze data on retrospective evaluations of entire multi-modal trip experiences and satisfaction with individual trip legs. We...
Article
Full-text available
Classifying public transport service attributes based on their influence on overall traveler satisfaction can assist stakeholders and practitioners in introducing cost-efficient measures. To date most studies employed methods that were based on the assumption that the impact of service attributes on traveler satisfaction is entirely linear and symm...
Article
Full-text available
This study utilised the Swedish national travel survey covering a period of over 30 years. We investigated the long-term trends in activity-travel patterns of individuals in different life-cycle stages and generations using cohort analysis and a path model. The main findings are summarised as follows. The women, including mothers, in younger genera...
Article
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We examine the effect of weather, accessibility and built-environment characteristics on overall travel experience as well as the experience with the latest trips. These are factors that are often disregarded in the travel satisfaction literature even though they are believed to largely influence the first mile of the door-to-door trip. This study...
Article
This case study describes the project Elbilslandet (The Electric Vehicle Country) in Gotland, Sweden, where the island Gotland is made “ready for electric vehicles” by providing a network of charging infrastructure and electric vehicle rental during several summer seasons. The influence of the electric vehicle (EV) rental scheme on the process towa...
Article
The activity space of an individual is defined as the activity-travel environment which a traveller is using for his or her activities (Axhausen et al., 2002). It is limited by this individual's ability and resources, such as available time for travel as well as his or her anchor points. However, most existing studies have focused on single individ...
Article
The real environmental benefits of a transition towards EVs highly depend on the future EV-users' activity-travel patterns adapted to their new vehicle's capacity. Despite its importance, the impact of this adaptation is largely unknown. In this study, a stated adaptation experiment has been conducted to investigate changes of travel patterns as a...
Article
Full-text available
Intercity travel congestion during the main national holidays takes place every year at different places around the world. Charge reduction measurements on existing toll roads have been implemented to promote an efficient use of the expressways and to reduce congestion on the public transit networks. However, some of these policies have had negativ...
Conference Paper
Public transport is key to access social, economic, civic and cultural life. However, there is still a need to better understand (1) the needs of all transport users and (2) transport provision in cities and regions. The development of an inclusive, validated, passenger experience measurement instrument is the first step in understanding the whole...
Article
Full-text available
Abstract: China has recently initialised affordable housing policies to provide low rent housings for medium and low income households aiming to satisfy the growing demand in the housing market. The travel behaviour of residents in these two different types of housing is likely to differ, since public housing tenants have a limited choice of reside...
Chapter
This chapter describes the lessons learned from designing, deploying and analysing the results from a smartphone applications, sbNavi™, in measuring door-to-door, multi-modal, travel satisfaction across eight different European cities. In this chapter, the process, the architecture design and the pros and cons of deploying such app are described. C...
Article
Full-text available
Ensuring safety along door-to-door Public Transport trips is a fundamental challenge to service providers since safety influences individuals’ mobility. Using reported safety perceptions of travelers waiting at six bus stops with different characteristics in Stockholm, this study investigates the factors that are more impactful in determining trave...
Conference Paper
Full-text available
Using door-to-door travel satisfaction data which was collected in Stockholm, Sweden, in this paper the authors have investigated how satisfaction with the main mode is related to the overall trip satisfaction, and how service related variables influence satisfaction at both levels. The results show that every stages within the journey matters in i...
Article
Full-text available
Using a door-to-door travel survey (METPEX) for Stockholm and the year 2014, this study analyzed the effects of quality of infrastructure and design of public transport premises on the overall travel experience and on the trip stages for different traveler segments. The market segmentation approach was based on travel characteristics, captivity, vu...
Article
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This paper explores the interactions between travel demand, time allocation and mode choice in different seasons by jointly modeling the work and/or study, routine and leisure activity-travel engagements of 67 individuals in Stockholm, Sweden. A longitudinal panel two-week travel diary data collected in four consecutive waves over a span of seven m...
Article
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The increased interest in the automation of travel diary collection, together with the ease of access to new artificial intelligence methods led scientists to explore the prerequisites to the automatic generation of travel diaries. One of the most promising methods for this automation relies on collecting GPS traces of multiple users over a period...
Article
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Using a hierarchical structured equation model and a multi-dimensional 3-week household time-use and activity diary conducted in Bandung Metropolitan Area, Indonesia, this study investigated the interaction among individuals’ non-instrumental variables, time space (such as their day-to-day time duration of activity participation, socio-demographics...
Article
Full-text available
This paper describes and evaluates a stated adaptation instrument to investigate the effects of a transition towards electric vehicles on travel behaviour. The respondents were equipped with an “imaginary” electric vehicle with a specific range and were asked whether they wanted to make changes in an activity-travel schedule they had previously reg...
Article
This study describes the lessons learned from designing, deploying and analysing the results from different travel satisfaction survey tools which measures the travellers’ door-to-door travel satisfaction. The travel satisfaction measurement survey tools tested consisted of two types of smartphone applications (a satellite navigation app and a game...
Chapter
Indonesia is the largest archipelago in the world, with 17,504 islands. Of these, only approximately 6000 are inhabited (CAI-Asia Centre 2009). The five major islands are Kalimantan, Sumatra, Papua, Sulawesi, and Java. The archipelago bridges two continents, Asia and Australia. This strategic position has had great influence on the country’s cultur...
Article
Full-text available
The subsidy level of public transport systems varies considerably among systems worldwide. While limited-scale free-fare public transport (FFPT) services such as limited campaigns and fare evasion for special groups or specific services are prevalent, there is only limited evidence on the consequences of introducing a full-fledged FFPT. The case of...
Article
A large scale deployment of electric vehicles (EVs) is likely to contribute to a more sustainable transport system. However, charging EVs will increase the load on the electricity network. The maximum load may be minimized by coordinating the timing of charging activities, in order to spread electricity demand more equally over the course of a day....
Article
Using a panel regression model and a multidimensional three-week household time-use and activity diary, this study analyses the complexity of the day-to-day variability in individuals' activity-travel patterns by applying a multidimensional sequence alignment model. It is found that the variability between weekend and weekday pairs is much greater...
Article
Full-text available
Currently, there is a great need for new methods to collect travel data. Traditional methods have considerable drawbacks and, at the same time, the models used to analyse the transport system require more and more detailed and high-quality data. An alternative method that stands out as very promising is to capture raw data from devices that can use...
Article
Full-text available
There is a lack of understanding of how certain characteristics of the urban environment influence an individual’s spatial cognition and familiarity with surrounding areas, and, subsequently, their travel behaviours and how these change over time. This paper aims to address this research gap in exploring the dynamics of individuals’ spatial cogniti...
Article
Full-text available
Purpose: Using a three-week household activity-travel survey, this paper explores the relationship between individuals’ self-reported physical, mental and social health conditions and their time allocation for different types of in-home and out-of-home time activities. Methods: A path model is developed to investigate the roles of activity-travel t...
Article
Electric vehicles (EVs) show promise for improving the environmental sustainability of the transport system since, as opposed to conventional vehicles, they have no tailpipe exhaust gas emissions. The use of EVs can also decrease the amount of greenhouse gas emissions, especially if the electricity has been generated with renewable energy sources....
Article
Full-text available
Activity time allocation was modelled as allocating a continuous quantity into multiple discrete alternatives. However, only a few studies have considered the influence of the travel time that needs to be spent on reaching the activity location in activity time allocation problems. Moreover, travel time itself is influenced by individuals’ mode cho...
Article
Full-text available
Given that severe weather conditions are becoming more frequent, it is important to understand the influence of weather on an individual’s daily activity-travel pattern. While some previously rare events are becoming more common, such as heavy rain, unpredicted snow, higher temperatures, it is still largely unknown how individuals will change and a...
Conference Paper
Full-text available
The growing need of acquiring data that is useful for travel behaviour analysis led scientists to pursue new ways of obtaining travel diaries from large groups of people. The most promising alternative to traditional (declarative) travel diary collection methods are those that rely on collecting trajectories from individuals and then extract travel...
Poster
Full-text available
Poster for the ”A Series of Three Case Studies on the Semi-Automation of Activity Travel Diary Generation Using Smartphones” paper presented at the 96th Annual Meeting of the Transportation Research Board,Washington, D.C., January 2017